PDF(Pubmed)
Abstract：
UNASSIGNED: Catadromous fishes have well-developed elongated olfactory organs with numerous lamellae and different types of receptor neurons related to their breeding migration.
UNASSIGNED: The current study showed how the olfactory system adapted to the catadromous life. Our work declared the need of the migratory fishes for the sense of smell that is exhibited by a higher number of the olfactory lamellae and the receptor neuron verification in the olfactory epithelium.
UNASSIGNED: Ten specimens of fully grown, but pre-matured, silver eels of Anguilla vulgaris were captured at the outlet of Edco Lake, overlooking the Mediterranean Sea, east of Alexandria. Olfactory rosettes were dissected and fixed for scanning electron microscope (SEM) and transmission electron microscope (TEM).
UNASSIGNED: Our study gave a morphological description of the olfactory system of A. vulgaris. At the ultrastructural level using SEM and TEM, one olfactory rosette was provided with 90-100 flat radial olfactory lamellae. The nasal configuration allowed water to enter and exit, transferring odorant molecules to olfactory receptor cells which comprise long cylindrical ciliated and microvillous receptors as well as rod-tipped cells. These cells are bipolar neurons with upward dendritic knobs. The olfactory epithelia also include crypt receptor cells. Interestingly, the olfactory neurons are delimited by nonsensory supporting cells, including long motile kinocilia and sustentacular supporting cells beside mucus secretory goblet cells and ionocytes or labyrinth cells that contribute to the olfaction process.
UNASSIGNED: Olfaction is crucial in all vertebrates, including fishes as it involves reproduction, parental, feeding, defensive, schooling, and migration behaviors. Here, A. vulgaris is an excellent model for catadromous fishes. It has a well-developed olfactory organ to cope with the dramatic climate change, habitat loss, water pollution, and altered ocean currents effect during their catadromous life for reproduction.
UNASSIGNED: The current study showed how the olfactory system adapted to the catadromous life. Our work declared the need of the migratory fishes for the sense of smell that is exhibited by a higher number of the olfactory lamellae and the receptor neuron verification in the olfactory epithelium.
UNASSIGNED: Ten specimens of fully grown, but pre-matured, silver eels of Anguilla vulgaris were captured at the outlet of Edco Lake, overlooking the Mediterranean Sea, east of Alexandria. Olfactory rosettes were dissected and fixed for scanning electron microscope (SEM) and transmission electron microscope (TEM).
UNASSIGNED: Our study gave a morphological description of the olfactory system of A. vulgaris. At the ultrastructural level using SEM and TEM, one olfactory rosette was provided with 90-100 flat radial olfactory lamellae. The nasal configuration allowed water to enter and exit, transferring odorant molecules to olfactory receptor cells which comprise long cylindrical ciliated and microvillous receptors as well as rod-tipped cells. These cells are bipolar neurons with upward dendritic knobs. The olfactory epithelia also include crypt receptor cells. Interestingly, the olfactory neurons are delimited by nonsensory supporting cells, including long motile kinocilia and sustentacular supporting cells beside mucus secretory goblet cells and ionocytes or labyrinth cells that contribute to the olfaction process.
UNASSIGNED: Olfaction is crucial in all vertebrates, including fishes as it involves reproduction, parental, feeding, defensive, schooling, and migration behaviors. Here, A. vulgaris is an excellent model for catadromous fishes. It has a well-developed olfactory organ to cope with the dramatic climate change, habitat loss, water pollution, and altered ocean currents effect during their catadromous life for reproduction.
摘要：
■Catadrophous鱼具有发达的细长嗅觉器官，具有许多薄片和与其繁殖迁移相关的不同类型的受体神经元。
■当前的研究表明，嗅觉系统如何适应灾难性的生活。我们的工作表明，迁徙鱼类需要嗅觉，这是由嗅觉上皮中更多数量的嗅觉薄片和受体神经元验证所表现出来的。
■十个完全生长的标本，但早熟了,在Edco湖的出口处捕获了安圭拉的银鳗鱼，俯瞰地中海,亚历山大以东。解剖并固定嗅觉玫瑰花，用于扫描电子显微镜（SEM）和透射电子显微镜（TEM）。
■我们的研究对普通A的嗅觉系统进行了形态学描述。在超微结构水平使用SEM和TEM，一个嗅觉花环设有90-100个扁平的放射状嗅觉薄片。鼻腔结构允许水进出，将气味分子转移到嗅觉受体细胞，该细胞包括长圆柱形纤毛和微绒毛受体以及杆状细胞。这些细胞是双极神经元，具有向上的树突状旋钮。嗅觉上皮还包括隐窝受体细胞。有趣的是,嗅觉神经元由非感觉支持细胞界定，包括有助于嗅觉过程的粘液分泌杯状细胞和离子通道细胞或迷宫细胞旁边的长运动神经和支撑细胞。
■嗅觉在所有脊椎动物中都至关重要，包括鱼类，因为它涉及繁殖，父母,喂养,防御性,学校教育,和迁移行为。这里,普通A.是一种极好的触虫模型。它有一个发达的嗅觉器官来应对剧烈的气候变化，栖息地丧失,水污染,并改变了洋流在其繁殖过程中的作用。
■当前的研究表明，嗅觉系统如何适应灾难性的生活。我们的工作表明，迁徙鱼类需要嗅觉，这是由嗅觉上皮中更多数量的嗅觉薄片和受体神经元验证所表现出来的。
■十个完全生长的标本，但早熟了,在Edco湖的出口处捕获了安圭拉的银鳗鱼，俯瞰地中海,亚历山大以东。解剖并固定嗅觉玫瑰花，用于扫描电子显微镜（SEM）和透射电子显微镜（TEM）。
■我们的研究对普通A的嗅觉系统进行了形态学描述。在超微结构水平使用SEM和TEM，一个嗅觉花环设有90-100个扁平的放射状嗅觉薄片。鼻腔结构允许水进出，将气味分子转移到嗅觉受体细胞，该细胞包括长圆柱形纤毛和微绒毛受体以及杆状细胞。这些细胞是双极神经元，具有向上的树突状旋钮。嗅觉上皮还包括隐窝受体细胞。有趣的是,嗅觉神经元由非感觉支持细胞界定，包括有助于嗅觉过程的粘液分泌杯状细胞和离子通道细胞或迷宫细胞旁边的长运动神经和支撑细胞。
■嗅觉在所有脊椎动物中都至关重要，包括鱼类，因为它涉及繁殖，父母,喂养,防御性,学校教育,和迁移行为。这里,普通A.是一种极好的触虫模型。它有一个发达的嗅觉器官来应对剧烈的气候变化，栖息地丧失,水污染,并改变了洋流在其繁殖过程中的作用。
